1. Muscle applications- Smart card applications to use or manage one of the card supported by the Muscle plugins.
Source code available from http://anonscm.debian.org/viewvc/muscleapps/trunk/PCSC/ or svn://anonscm.debian.org/svn/muscleapps/trunk/

2. Muscle plugins- Different plugins to be used with different smart cards. These plugins just provide an API. Look for Muscle card applications for usefull applications using the plugins.
Source code at svn://anonscm.debian.org/svn/muscleplugins/trunk/